Imaging device and method for determining imaging protocol

Abstract

The invention relates to a computer-implemented method for determining an imaging protocol for acquiring image data of a patient's body region using an imaging device, comprising the steps: acquiring (S1) information about the body region, performing (S2) a first imaging examination depending on the information about the body region and acquiring image data of the body region, providing (S3) the image data and an input option for adjusting a parameter of an imaging area, providing (S4) assistance for adjusting the imaging area depending on the information about the body region, acquiring (S5) an adjusted imaging area, and determining (S6) the imaging protocol for a second imaging examination depending on the adjusted imaging area.The invention further relates to an imaging device for acquiring image data of a body region of a patient and a computer program product which can be directly loaded into a storage unit of a computing unit (28) of an imaging device according to the invention, with program code means to execute a computer-implemented method according to the invention.

Description

[0001] Regardless of the grammatical gender of a particular term, persons with male, female or other gender identities are included.

[0002] Planning an imaging protocol for acquiring image data of a diagnostically relevant body region of a patient using an imaging device can depend on patient-specific requirements and / or user-specific input during patient registration, as well as the patient's preparation for the imaging examination. For example, when planning the imaging protocol, the laterality of the diagnostically relevant body region (e.g., its presence on the left or right side of the body), the division of the body region into relevant sections, and / or the orientation of the body region in a reference system must be considered for selecting a suitable slice orientation. Particularly in imaging protocols for the patient's dental or jaw region, specifying a suitable slice orientation and selecting relevant sections may be crucial due to the symmetrical structure of the dental arches (e.g.,The left, right, or frontal mandible and / or maxilla) and the curved shape of the dental arches can be complex. Therefore, users of the imaging device must undergo extensive training to ensure error-free acquisition of image data of diagnostically relevant body regions using an imaging device in everyday clinical practice.

[0003] Commercially available imaging devices typically include predefined instructions for slice orientation at the protocol level. However, such predefined instructions rarely consider the laterality of the diagnostically relevant body region and may, for example, indicate a slice positioning for a patient's left hip when the patient's right hip is diagnostically relevant. While predefined instructions should be understood as examples, users of the imaging device must have sufficient training and experience to plan measurements for all possible use cases and complex anatomical structures.

[0004] In some exceptional cases, when a small number of layer orientations are used, various parameters or scenarios are preset for the user, with each layer orientation accompanied by corresponding instructions. However, this leads to a duplication of instructions, workflows, and imaging protocols, which is undesirable.

[0005] It is therefore an object of the invention to improve a process for determining an imaging protocol for acquiring image data of a body region of a patient using an imaging device.

[0006] This problem is solved according to the invention by the subject matter of the independent claims. Advantageous embodiments and expedient further developments are the subject matter of the dependent claims.

[0007] The computer-implemented method according to the invention for determining an imaging protocol for acquiring image data of a body region of a patient using an imaging device comprises the following steps: Acquiring information about the body region, performing an initial imaging examination based on the information about the body region and acquiring image data of the body region, providing the image data and an input option to adjust a parameter of an imaging area, providing assistance for adjusting the imaging area based on the information about the body region, acquiring an adjusted imaging area, and determining the imaging protocol based on the adjusted imaging area.

[0008] An imaging device can be a device designed to acquire image data of an object under investigation, in particular a body region or the interior of a patient. Preferably, an imaging device is designed to acquire two-dimensional and / or three-dimensional image data, in particular time-dependent three-dimensional image data, of the object under investigation. Examples of imaging devices include magnetic resonance imaging (MRI) devices, X-ray machines, computed tomography (CT) machines, single-photon emission computed tomography (SPECT) scanners, positron emission tomography (PET) scanners, as well as mammography machines, ultrasound machines, and the like. In a preferred embodiment, the imaging device is configured as a magnetic resonance imaging (MRI) machine.

[0009] An imaging protocol for an imaging examination can be characterized by one or more imaging parameters. Examples of imaging parameters include spatial resolution, contrast, slice thickness, the dimensions of an imaging volume, relaxation time, echo time, and the like. An imaging parameter can encompass any image-relevant setting of the imaging device, as well as a parameter of an imaging workflow. Furthermore, parameters that define an imaging area can also be considered imaging parameters.

[0010] An imaging study may include one or more groups of imaging parameters as well as one or more imaging sequences.

[0011] An imaging protocol can define the procedure for an imaging examination of a patient's body region. For example, performing an imaging examination may involve acquiring one or more imaging sequences. During the acquisition of these imaging sequences, image data of the patient's body region can be recorded.

[0012] The imaging protocol can be adapted to capture image data of a body region. This body region could include, for example, a hip region, a shoulder region, a knee region, a brain region, an eye region, or any other anatomical structure. It is equally conceivable that the body region could encompass a tissue structure or an organ, such as a heart, liver, kidney, or the like.

[0013] Preferably, the imaging protocol or an imaging study based on the imaging protocol includes performing one or more imaging sequences adapted for imaging a jaw region, a tooth region and / or a tooth.

[0014] In a preferred embodiment, the first imaging examination and / or the second imaging examination are magnetic resonance imaging (MRI) examinations of a jaw region or a dental region of a patient. It is conceivable that an imaging sequence from at least one MRI examination has a very short echo time to compensate for the short T2 relaxation time of dentin or enamel spins and to represent these areas with high signal intensity in the acquired image data. Very short echo times can be less than 150 µs or less than 70 µs. Possible imaging sequences include, for example, FLASH ( fast low-angle shot ") or UTE ( "ultra-short echo time ") sequences. However, it is also conceivable that imaging sequences with a longer echo time, such as a TSE (" turbo spin echo ") sequence, can be used. With such sequences, the acquisition of the magnetic resonance signal of the enamel or dentin can be avoided. In image data from such imaging sequences, the teeth can be differentiated by a lack of signal intensity compared to surrounding tissue.

[0015] Image data can represent any data acquired from the patient's body region by the imaging device. Image data can include both raw data and images derived from the raw data. For example, the image data can include digitized magnetic resonance signals acquired by a magnetic resonance imaging (MRI) scanner. The image data can be stored as complex values ​​in a k-space matrix. Preferably, however, the image data also includes MRI images reconstructed from the digitized MRI signals.

[0016] Information about a patient's body region can include any description of the type, name, location, and / or extent of that body region. Furthermore, body region information can include the selection and / or identification of a body region or anatomical structure from a list or database of body regions.

[0017] Preferably, acquiring information about the patient's body region includes capturing input from a user of the imaging device via a suitable input or user interface, such as a mouse, keyboard, touchscreen, and / or voice interface. Acquiring information about the patient's body region may further include retrieving or receiving data, in particular patient data or patient information, from an internal or external storage unit and / or a medical information system via an interface. A medical information system may, for example, be a radiology information system (RIS) or a hospital information system (" hospital information system " HIS) represent.

[0018] Information about the patient's body region can be manually entered by a user of the imaging device via a user interface. Specifically, the information about the body region can be selected by the user of the imaging device by choosing an anatomical structure or a segment of an anatomical structure based on a representation of the anatomical structure provided by the user interface. However, it is also conceivable that the imaging device has a control unit and / or a processing unit designed to retrieve the information about the patient's body region based on patient information via a suitable interface from the medical information system, a cloud, and / or a local storage device.In particular, information about the body region can be determined using an algorithm or an image processing algorithm, depending on the image data from the initial imaging examination and / or the patient information. The patient information can include a finding or diagnosis, but also age, sex, weight, or any other medical or demographic information about the patient.

[0019] In a preferred embodiment of the method according to the invention, acquiring information about the patient's body region includes acquiring a section of a dental region, in particular a section of one or more dental arches, of the patient.

[0020] The first imaging examination is preferably a localizer measurement. A localizer measurement can be understood as a time-efficient imaging examination in which image data, in particular localizer image data, of the patient's body region are acquired. Localizer measurements may have limitations regarding the quality and / or spatial resolution of the acquired image data compared to conventional imaging. Preferably, the localizer measurement provides a spatial resolution suitable for the detection and / or identification of anatomical structures, such as a tooth, a dental arch, a jawbone, or the like. The first imaging examination may also include a projection measurement. A projection measurement is an imaging examination in which spatial coding in a spatial direction is omitted.The image data can therefore comprise a two-dimensional projection image of a three-dimensional volume of the patient's body region. It is also conceivable that the image data could include an image from a previous imaging examination, particularly a previous magnetic resonance imaging (MRI) scan.

[0021] In a preferred embodiment of the method according to the invention, image data of the body region is acquired by means of an antenna element or a plurality of antenna elements of a magnetic resonance imaging (MRI) device. For this purpose, the antenna elements can be positioned, for example, in a jaw region and / or in the oral cavity of the patient. The antenna element or the plurality of antenna elements can, in particular, be designed to receive magnetic resonance signals from the jaw region and transmit them to a receiver unit of the MRI device.

[0022] The initial imaging examination can be performed depending on the information about the body region. However, it is also conceivable that the initial imaging examination can be performed independently of acquiring information about the patient's body region (e.g., as an independent localizer measurement or overview measurement). Performing the initial imaging examination allows for the acquisition of image data of the patient's body region. This image data can include, in particular, localizer image data or other image data according to an embodiment described below.

[0023] Providing image data of the patient's body region preferably includes at least storing the image data on a local storage unit of the imaging device, a network storage unit, a medical information system, and / or a cloud. It is also conceivable that providing the image data of the body region includes outputting the image data to a user of the imaging device via an output unit. An output unit could, for example, be a screen, a monitor, a touchscreen, a projector, or the like.

[0024] A user of the imaging device could be, for example, a medical professional, particularly a dentist, a medical-technical assistant, or a member of medical staff in a practice or clinical setting. The user could be located at the imaging device's location or at any other location. For instance, the user could be in a different city, region, and / or country and interact with the imaging device remotely.

[0025] It is further conceivable that the image data of the patient's body region are processed by a program and / or an algorithm designed to categorize, identify, and / or classify image content or one or more anatomical structures. In particular, it is conceivable that the program and / or the algorithm are designed to determine assistance for adjusting the imaging area and / or a preliminary imaging area based on information about the body region and the image data. In one embodiment of the method according to the invention, the program and / or the algorithm are designed to determine the assistance for adjusting the imaging area and / or the preliminary imaging area based on patient information.

[0026] Providing the input option for adjusting a parameter of an imaging area preferably includes outputting the input option via an output device and / or a user interface. For example, the input option for adjusting the parameter of the imaging area can be output to the user via a graphical user interface, in particular a monitor or a touchscreen. The input option for adjusting the parameter of the imaging area can include an input mask that allows the user to change or adjust a parameter of the imaging area. A parameter of the imaging area can, for example, define a spatial position, an orientation, a dimension, and / or a shape of the imaging area.

[0027] The imaging area can be understood as a measurement volume, a field of view, a viewing window, or a slice orientation. In particular, the imaging area can define a volume within a patient acquisition area of ​​the imaging device, from which image data is acquired by means of an imaging examination. Preferably, at least one section of the patient's body region is positioned within a so-called imaging volume of the imaging device for the purpose of an imaging examination. The imaging area can be understood as a volume within the imaging volume of the imaging device to which the acquisition of image data is restricted.

[0028] In a preferred embodiment, the imaging device is configured as a magnetic resonance imaging (MRI) device. An imaging volume can represent a volume with the highest homogeneity of a magnetic field, in particular an isocenter, of the MRI device.

[0029] Providing assistance for adjusting the imaging area preferably includes outputting information about a desired or ideal setting of the imaging area via an output unit or a graphical user interface according to an embodiment described above. For example, the assistance for adjusting the imaging area can be displayed on a monitor for the user.

[0030] Assistance in adjusting the imaging area is provided depending on the information about the body region.

[0031] Providing assistance for adjusting the imaging area can involve selecting information about a desired or ideal imaging area setting based on information about the patient's body region. For example, a control unit and / or a processing unit of the imaging device can be configured to select and provide specific information about a desired or ideal imaging area setting from a library or database, depending on the patient's body region. It is conceivable that the information about the patient's body region includes a name, label, and / or identification of an anatomical structure, which is used by the control unit and / or processing unit to determine the assistance for adjusting the imaging area.

[0032] In one example, the information about the patient's body region includes a designation of a section of an anatomical structure, in particular a section of a dental region or dental arch. The imaging area adjustment aid can be selected accordingly, depending on the designation of the anatomical section, and provided to the user of the imaging device via an output unit or a graphical user interface. For example, the imaging area adjustment aid can be selected and retrieved from a database on a storage unit, which contains multiple imaging area adjustment aids for different body regions.

[0033] The imaging area adjustment aid can be designed to inform an imaging device user about a desired or ideal dimension, position, and / or orientation of the imaging area for the patient's body region. Furthermore, the imaging area adjustment aid can be designed to assist the imaging device user in adjusting the dimension, position, and / or orientation of the imaging area relative to an anatomical structure of the patient's body region. It is conceivable that the imaging area adjustment aid represents a guideline or instruction specifying how the imaging area should be parameterized for an imaging examination of the patient's body region or a segment thereof.An imaging area parameterized according to the assistance for adjusting the imaging area can be aligned along a diagnostically relevant anatomical structure of the patient's body region and / or adapted to the diagnostically relevant anatomical structure of the patient's body region.

[0034] In a preferred embodiment of the method according to the invention, providing the assistance for adjusting the imaging area comprises superimposing and / or comparing the assistance for adjusting the imaging area with the image data of the first imaging examination. For example, the assistance for adjusting the imaging area and the image data of the first imaging examination can be provided to a user of the imaging device by means of an output unit or a graphical user interface.

[0035] Acquiring a customized imaging area can include acquiring input from a user of the imaging device. In particular, the user input can be provided via an input interface or user interface according to an embodiment described above. The user input can include adjusting a parameter or property of a graphic object representing the imaging area. In particular, the input can represent adjusting a position, dimension, and / or orientation of the graphic object. The graphic object can comprise a window or any polygon, in particular a square, rectangle, or other polygon. Preferably, the graphic object is superimposed on the image data of the first imaging study. The graphic object can, in particular, correspond to the input option for adjusting the parameter of an imaging area.

[0036] It is also conceivable that the user input includes text-based input. This text-based input could include one or more coordinates, one or more dimensions of the imaging area, a coordinate of a geometric center point of the imaging area, a rotation angle of the imaging area, or the like.

[0037] Preferably, the method according to the invention allows a user of the imaging device to adjust the imaging area depending on the assistance provided for adjusting the imaging area and the image data from the first imaging examination. This advantageously enables adjustment of the imaging area taking into account both regulations or specifications for setting the imaging area for specific body regions and the individual characteristics of the patient's body region's anatomical structure.

[0038] Determining the imaging protocol for a second imaging examination can involve defining one or more imaging parameters for the second examination. It is also conceivable that determining the imaging protocol includes defining one or more imaging sequences, particularly a sequence of multiple imaging sequences. The imaging protocol can define one or more imaging parameters, as well as a workflow for the second or subsequent imaging examinations. The second and subsequent imaging examinations can be designed to acquire high-resolution image data of the patient's body region.

[0039] According to the invention, the imaging protocol is determined based on the adapted imaging area. Preferably, the imaging protocol is determined automatically based on the imaging area adapted by the user. For example, depending on the adapted imaging area (e.g., based on user input), one or more groups of imaging parameters, one or more imaging sequences, and / or a sequence of imaging sequences can be determined. Preferably, the imaging protocol is determined based on the adapted imaging area by means of an algorithm implemented on a control unit and / or a processing unit of the imaging device.

[0040] An algorithm mentioned herein may include a logic-based algorithm, a trained algorithm, a self-learning algorithm, an artificial neural network, a machine learning algorithm, an image processing algorithm, but also one or more mathematical operators.

[0041] Certain body regions of patients can differ significantly from one another. For example, a patient's height and / or sex, as well as body circumference, can influence the location of specific body regions. It is also conceivable that anatomical structures within a patient's body region may exhibit different shapes, dimensions, or spatial orientations. Furthermore, anatomical structures present in both halves of the patient's body are often not perfectly symmetrical and can confuse or irritate the user when determining an imaging protocol. In particular, anatomical structures that can be divided into several approximately similar or symmetrical, diagnostically relevant areas require intensive training of imaging device users to ensure the acquisition of image data of the correct body region and high image quality.

[0042] An inventive method enables guided instruction for a user in determining an imaging protocol for acquiring image data of a patient's body region using an imaging device. In particular, the inventive method can dynamically support the user in adjusting an imaging area, i.e., depending on different diagnostically relevant body regions of the patient and / or depending on image data of a specific body region of the patient. For example, the user can be directly directed to the diagnostically relevant body region and a standard parameter setting for the imaging area by providing assistance in adjusting the imaging area, without having to define or restrict the imaging area in advance.This can be particularly advantageous in imaging studies of teeth, which can vary greatly between patients and can easily lead to confusion due to the symmetry between different tooth sections.

[0043] Furthermore, the method according to the invention enables a user of an imaging device, without any special prior knowledge, to adequately determine an imaging area even in the presence of complex anatomical structures and / or layer orientations. This advantageously avoids errors in determining an imaging protocol and subsequently acquiring further image data of the body region. Moreover, it ensures high quality of the additional image data acquired by the imaging device.

[0044] Using the method according to the invention, the image data of the body region, the input option for adjusting the parameter of the imaging area, and the assistance for adjusting the imaging area can be provided to the user of the imaging device simultaneously or in a predetermined sequence. This advantageously enables the user to adjust the imaging area to one or more sections of the patient's body region more efficiently and / or accurately. In particular, within the framework of guided human-machine interaction, the user can be supported in adjusting the imaging area to one or more sections of the patient's body region via a user interface of the imaging device, depending on the image data of the body region, the input option for adjusting the parameter of the imaging area, and the assistance for adjusting the imaging area.

[0045] In one embodiment, the method according to the invention comprises the step: Determining a preliminary imaging area depending on the image data, where providing the input option to adjust the imaging area parameter involves overlaying a representation of the preliminary imaging area with the image data of the patient's body region.

[0046] Determining the preliminary imaging area may, in particular, include determining a dimension, a spatial arrangement and / or a spatial orientation of the imaging area relative to the patient's body region.

[0047] Preferably, the representation of the preliminary imaging area is superimposed on the image data of the patient's body region when the image data is provided. A representation of the preliminary imaging area may, for example, comprise a symbol, a graphic object, or a graphical representation of the preliminary imaging area. In particular, the representation of the preliminary imaging area may include a window or a polygon according to an embodiment described above. Providing an overlay of the preliminary imaging area with the image data from the first imaging examination can inform a user of the imaging device about a preferred or conventional dimension, orientation, and / or spatial location of the preliminary imaging area relative to the patient's body region.

[0048] In a preferred embodiment, the representation of the preliminary imaging area is superimposed on the image data of the patient's body region and provided together with the input option for adjusting the imaging area parameter. This provides a starting point for the user to adjust the imaging area and advantageously increases the efficiency of such adjustments.

[0049] It is conceivable that the preliminary imaging area could be determined based on the image data using an algorithm, particularly an image processing algorithm. For example, the algorithm could be designed to process the image data or localizer image data and determine a dimension, spatial arrangement, and / or orientation of the preliminary imaging area relative to the patient's body region. Furthermore, it is conceivable that the preliminary imaging area could be determined based on a parameterization guideline for a specific body region, a reference imaging examination of the same body region from another patient, and / or a geometric analysis of the patient's body region.

[0050] Providing assistance for adjusting the imaging area and a representation of a preliminary imaging area superimposed on the image data can enable or facilitate the adjustment of the imaging area, especially for inexperienced users, in the case of complex or atypical anatomical structures, but also in the case of difficult layer orientations.

[0051] Furthermore, providing assistance for adjusting the imaging area and the preliminary imaging area allows the user to dynamically assess any discrepancies between the assistance and the preliminary imaging area, which may arise, for example, due to complex or atypical anatomical structures. This allows the user to be alerted to problems in adjusting the imaging area and reduces the risk of incorrectly determining the imaging protocol.

[0052] In a further embodiment of the method according to the invention, the acquisition of the adapted imaging area includes the acquisition of a correction of the preliminary imaging area.

[0053] Preferably, the acquisition of the adapted imaging area includes the acquisition of a correction of a preliminary dimension, a preliminary spatial arrangement and / or a preliminary orientation of the imaging area relative to the patient's body region.

[0054] In particular, providing the input option for adjusting the imaging area parameter may include prompting the user of the imaging device to adjust or correct the preliminary imaging area. The input option for adjusting the imaging area parameter may be provided to the user, according to an embodiment described above, by means of an output unit and / or a graphical user interface.

[0055] Diagnostically relevant body regions with small dimensions, such as inflammation of a pulp or tooth root, typically need to be considered when determining an imaging protocol and cannot be readily covered using conventional imaging area determination methods. For anatomical structures whose dimensions and / or orientation deviate from a typical norm or standard distribution, the imaging area determination process is further complicated.

[0056] An inventive method enables the correction of a preliminary imaging area with the aid of a provided tool for adjusting the imaging area. In particular, a direct comparison of the image data of the patient's body region with the preliminary imaging area and the tool for adjusting the imaging area advantageously allows the user to dynamically assess necessary measures for the individual correction or adjustment of the imaging area for a specific anatomical structure of a patient. This ensures a correct assignment of the imaging area even for anatomical structures that deviate from the norm.

[0057] In a preferred embodiment, the method according to the invention includes the further step: Performing the second imaging examination to capture further image data of the patient's body region, depending on the imaging protocol.

[0058] The subsequent image data may differ from the image data of the first imaging examination, particularly in terms of higher quality, improved centering on a diagnostically relevant anatomical structure and / or increased spatial resolution.

[0059] It is conceivable that the first imaging examination includes a localizer measurement, while the second imaging examination comprises a high-resolution imaging examination focused on the patient's body region or a section thereof. The localizer measurement can, in particular, serve the function of providing the user with image data showing the specific shape of the patient's body region, thus enabling them to adjust a parameter of the imaging protocol for the second examination.

[0060] The first and second imaging examinations are preferably performed using the same imaging device. However, it is also conceivable that the first and second imaging examinations are performed using different imaging devices (e.g., different magnetic resonance imaging (MRI) scanners) or different imaging modalities (e.g., an X-ray machine and an MRI scanner). For this purpose, the patient can, for example, be positioned in a reproducible relative position to the first and second imaging devices using a stereotactic patient acquisition device. Furthermore, markers can be used to allow adjustment of the imaging area for determining the imaging protocol for the second imaging examination using the second imaging device.The first imaging examination and the second imaging examination can therefore be performed at different times and / or in different locations.

[0061] Performing a second imaging examination based on an imaging protocol determined from a first imaging examination allows the second imaging examination to be adapted to the individual requirements of a patient's body region. In particular, the method according to the invention allows for the reproducible acquisition of further high-quality image data of the body region, regardless of the user's experience with the imaging device.

[0062] In one embodiment of the method according to the invention, providing assistance for adjusting the imaging area includes outputting text-based instructions and / or graphical instructions.

[0063] A text-based guideline may include a description or instruction containing information about a desired or ideal imaging area parameter for a specific imaging protocol, body region, and / or a specific segment of a body region. Specifically, the text-based guideline may include a suggestion or guideline for adjusting an imaging area parameter and / or a procedure for adjusting an imaging area parameter depending on the body region and / or segment of a body region being examined. For example, the text-based guideline may include a description of a desired or ideal imaging area parameter for a specific segment of a patient's anatomical structure, particularly a segment of a dental arch or segments of both dental arches.

[0064] An imaging area parameter can define a dimension, a spatial position, and / or an orientation of the imaging area relative to the patient's body region. In particular, an imaging area parameter can represent an imaging parameter of an imaging protocol.

[0065] A graphical guide may include pictographic or pictorial information about a desired or ideal parameter of the imaging area for a specific imaging protocol, a specific body region, and / or a specific section of a body region. Preferably, the graphical guide includes a desired or ideal dimension, a desired or ideal spatial position, and / or a desired or ideal orientation of the imaging area relative to the patient's body region.

[0066] Both text-based and graphical instructions can guide a user of the imaging device toward a desired or ideal parameter for the imaging area, depending on the patient's body region. However, depending on the individual anatomical characteristics of the patient's body region (e.g., based on the image data from the initial imaging examination), the user may decide to deviate from the desired or ideal parameter when adjusting the imaging area.

[0067] By providing text-based and / or graphical instructions according to the invention, even inexperienced users can be informed about standard parameterization of the imaging area depending on the body region. This advantageously reduces costs for staff training as well as errors in determining the imaging protocol.

[0068] In a preferred embodiment of the method according to the invention, providing assistance for adjusting the imaging area includes outputting a graphical guide, wherein the graphical guide includes a representation of the body region and the imaging area.

[0069] The graphical instructions may, in particular, include a detailed or abstract graphical representation of the imaging area in a desired position and / or orientation relative to the patient's body region. Preferably, the graphical instructions also include a representation of the patient's body region in a correct spatial arrangement relative to the abstract graphical representation of the imaging area. Furthermore, the graphical instructions may include a symbol and / or sign that informs the user of a change to a parameter of the imaging area to achieve a desired or ideal relative arrangement of the imaging area to the patient's body region. For example, the graphical instructions may include an arrow and / or a line that indicates to the user a change in the orientation, size, and / or position of the imaging area.

[0070] A graphical guide allows for the adjustment of the imaging area through a direct visual comparison of the arrangement and / or shape of the imaging area representation with the image data from the initial imaging examination and / or a preliminary imaging area according to an embodiment described above. This advantageously simplifies or accelerates the process of adjusting the imaging parameter. Furthermore, it advantageously avoids the use of technical terms that might be necessary with text-based instructions. This allows even inexperienced users to advantageously adjust the imaging area.

[0071] Another advantage of a graphical guide with a representation of the patient's body region is the ability to compare the ideal or desired imaging area relative to the patient's body region with the image data of that region, as well as with the preliminary imaging area. The graphical guide can effectively highlight problems in adapting the imaging area to the patient's anatomical structure, problems that would remain hidden to the user with a text-based or parameter-based approach to adjusting the imaging area.

[0072] In a preferred embodiment of the method according to the invention, the graphical instructions comprise at least two sectional views of the patient's body region. The at least two sectional views of the patient's body region are aligned along different reference planes, preferably orthogonal to each other.

[0073] For example, a reference plane for the first of at least two sectional views of the body region is arranged parallel to a frontal plane of the patient. A reference plane for a second of at least two sectional views of the body region can be arranged parallel to a sagittal plane of the patient. It is also conceivable that the graphic instructions include a third sectional view of the patient's body region. A reference plane for this third sectional view can be aligned parallel to a transverse plane of the patient. Of course, the graphic instructions can also include only one sectional view or only two sectional views of the body region, each with its reference plane parallel to the sagittal, frontal, or transverse plane of the patient, respectively.

[0074] Preferably, the reference planes of the at least two sectional views of the body region are oriented essentially orthogonally to each other. This can mean that the orientation of the reference planes of the first sectional view and the second sectional view deviates from a right angle by a few degrees, for example less than 10°, less than 8°, less than 6° or less than 4°.

[0075] It is also conceivable that a coordinate system defined by the reference planes of at least two sectional views of the body region is inclined at an angle to a coordinate system defined by the sagittal plane, the frontal plane and the transverse plane of the patient.

[0076] Providing a graphical guide according to the invention allows for the illustration of a desired or ideal arrangement of the imaging area in at least two reference planes. This advantageously enables a user of the imaging device to determine the difference between a current arrangement of the imaging area and / or a preliminary arrangement of the imaging area and the desired or ideal arrangement of the imaging area with respect to the reference planes of the at least two sectional views, taking into account the individual shape of the patient's body region. In particular, providing multiple sectional views of the body region can allow a user of the imaging device to more precisely adapt the imaging area to individual shapes of anatomical structures, such as the patient's dental arch.

[0077] In a further embodiment of the method according to the invention, providing the image data and the input option for adjusting the parameter of the imaging area includes outputting at least two sectional views of the patient's body region based on the image data, wherein one reference plane of each of the at least two sectional views of the patient's body region based on the image data is aligned parallel to one reference plane of each of the at least two sectional views of the patient's body region in the graphical guide.

[0078] For example, a reference plane of a first image-based sectional view of the body region is essentially aligned parallel to the reference plane of the first sectional view of the body region in the graphical guide. Similarly, a reference plane of a second image-based sectional view of the body region can be essentially aligned parallel to the reference plane of the second sectional view of the body region in the graphical guide.

[0079] In a preferred embodiment, providing the image data and the input option for adjusting the parameter of the imaging area includes outputting a third image data-based sectional view of the body region, wherein a reference plane of the third image data-based sectional view of the body region is aligned parallel to a reference plane of a third sectional view of the body region in the graphical guide.

[0080] In a particularly preferred embodiment, the reference plane of the first image-based sectional view of the body region corresponds to the reference plane of the first sectional view of the body region in the graphical instructions. Likewise, the reference planes of the second and / or third image-based sectional views of the body region can correspond to the respective reference planes of the second and / or third sectional view of the body region in the graphical instructions.

[0081] A cross-sectional view of the body region based on image data can represent a two-dimensional image, such as a magnetic resonance imaging (MRI) scan, an X-ray, or a computed tomography (CT) scan, of the patient's body region. It is conceivable that the cross-sectional view of the body region based on image data could include a transverse, a frontal, and / or a sagittal cross-sectional view of the body region. In particular, the cross-sectional view of the body region based on image data could include a transverse, a frontal, and / or a sagittal cross-sectional view from a localizer measurement of the patient's body region.

[0082] A graphical guide representing a patient's body region can differ significantly from the actual shape and / or arrangement of that region in any given patient. By providing a graphical guide with sectional views of the body region and corresponding image-based sectional views, the arrangement and / or orientation of the imaging area can be approximated to a desired or ideal result in multiple spatial directions. Furthermore, when adjusting the imaging area, individual characteristics of the shape and / or orientation of the body region and / or a section of the patient's body region can be taken into account.This allows for an advantageous increase in the efficiency of adjusting the imaging area and / or a reduction in the time required by a user of the imaging device to prepare or parameterize the second imaging examination.

[0083] In a preferred embodiment of the method according to the invention, providing the image data and the input option for adjusting the parameter of the imaging area includes comparing the image data with the graphical instructions.

[0084] Preferably, the graphical instructions include a sectional view of the patient's body region according to an embodiment described above. Similarly, the image data can include a sectional view of the patient's body region. The reference planes of the sectional view of the body region in the graphical instructions and the sectional view of the body region based on the image data can be aligned parallel to each other or correspond to each other, according to an embodiment described above.

[0085] It is conceivable that the image data, together with the graphical instructions, could be provided to the user of the imaging device via an output unit or a graphical user interface. The image data and the graphical instructions can be arranged side by side or at least partially overlapping. Preferably, the image data and the graphical instructions are provided via the output unit or the graphical user interface in such a way that the image data and the graphical instructions are displayed together on a single display area visible to the user at any given time.

[0086] An inventive comparison of the image data and the graphical instructions enables a visual adaptation of the imaging area to an individual anatomical structure of the patient's body region, while simultaneously taking into account a desired or ideal arrangement and / or orientation of the imaging area to a standard case illustrated by the graphical instructions. This advantageously reduces or avoids confusion in the selection of body region sections, as well as errors in adapting the imaging area.

[0087] A desired or ideal arrangement and / or orientation of the imaging area with respect to a specific body region may be defined by a specification or guideline from a professional, facility, institution and / or user committee.

[0088] In a further embodiment of the method according to the invention, the body region comprises an anatomical area of ​​a first half of the patient's body, which is essentially symmetrical to an anatomical area in a second half of the patient's body opposite the first half.

[0089] Preferably, the first half of the patient's body is essentially symmetrical to the second half. It is conceivable that the first and second halves of the patient's body are symmetrically positioned opposite each other along a median plane.

[0090] For example, the patient's body region can include part of an extremity, such as an arm, hand, foot, knee, shoulder, or the like. Furthermore, the body region can include a joint, such as a knee joint, shoulder joint, hip joint, or wrist joint, but also part of an organ, such as a hemisphere of the brain, a lung, or the like.

[0091] In a preferred embodiment of the method according to the invention, the patient's body region comprises a jaw region and / or a dental region. For example, the jaw region and / or the dental region comprises a dentition, a section of a jawbone, a section of a dentition, one or more dental arches, a section of a dental arch, gingiva, a section of gingiva and / or one or more teeth of the patient.

[0092] A patient's dental region comprises two essentially uniform dental arches, each with sections on the left and right sides of the patient's body. Furthermore, rows of anterior teeth within these arches are angled relative to rows of molars, necessitating the differentiation of numerous sections during dental imaging. The image data of these sections can be visually very similar, increasing the risk of misidentifying the right and left sides of an arch, or the upper and lower arches.

[0093] By providing assistance for adjusting the imaging area based on information about the body region, a direct link can be established to a section of the body region relevant for further imaging. This advantageously reduces or eliminates the risk of a user of the imaging device adjusting the imaging area for the wrong body region, even in complex anatomical structures with different sections.

[0094] In a preferred embodiment of the method according to the invention, a reference plane of a first sectional view of the at least two sectional views of the patient's body region is aligned parallel to an occlusal plane of the patient along a section of a dental arch. A reference plane of a second sectional view of the at least two sectional views of the patient's body region is aligned orthogonally to the first sectional view of the patient's body region.

[0095] As described above, a coordinate system defined by the reference planes of at least two sectional views of the body region can be inclined at an angle relative to a coordinate system defined by the sagittal plane, the frontal plane, and the transverse plane of the patient. In particular, the angle of inclination can correspond to an angle between a plane defined by the patient's occlusal plane and a transverse plane of the patient.

[0096] Providing a cross-sectional view of the body region aligned parallel to a patient's occlusal plane along a segment of the dental arch allows for consideration of the imaging area's orientation relative to the curvature or trajectory of the dental arch, which can vary between patients, particularly those of different ages. This can advantageously simplify the adjustment of the imaging area along a three-dimensional extent of a diagnostically relevant segment of the patient's body region and / or reduce the risk of errors during this adjustment.

[0097] The imaging device according to the invention is designed to acquire image data of a patient's body region. The imaging device can be configured according to one of the embodiments described above.

[0098] In a preferred embodiment, the imaging device is configured as a magnetic resonance imaging (MRI) device. The MRI device can be configured to acquire MRI data, in particular MRI images, of a patient positioned in a patient acquisition area of ​​the MRI device. The MRI data or MRI image data can include image data, in particular localizer image data, according to an embodiment described above.

[0099] The magnetic resonance imaging (MRI) device is designed to perform a first imaging examination, as well as a second imaging examination, of the patient's body region according to an embodiment of the inventive method described above. By using a MRI device, the patient's exposure to ionizing radiation can be advantageously avoided compared to X-ray or computed tomography (CT) scanners.

[0100] The imaging device comprises a control unit, an output unit, and a user interface. According to the invention, the control unit is configured to coordinate a method according to one of the preceding claims and to execute it by means of the imaging device. The control unit can be integrated into the imaging device or designed as a separate component.

[0101] The output unit is designed to provide the user of the imaging device with assistance in adjusting the imaging area. The user interface is designed to allow the user to adjust the imaging area based on this assistance.

[0102] The output unit and the user interface can be designed according to an embodiment described above. It is conceivable that the output unit and the user interface are integrated into a single component. However, the output unit and the user interface can also be designed as separate components. In a preferred embodiment, the output unit and the user interface form a graphical user interface, which is designed to provide the user of the imaging device with assistance in adjusting the imaging area and to enable such adjustment.

[0103] Preferably, the control unit has a signal connection to the user interface and / or the output unit of the imaging device. In particular, the control unit can be configured to control the output unit and provide assistance to the user of the imaging device for adjusting the imaging area. The control unit can further be configured to detect adjustments to the imaging area made by the user via the user interface.

[0104] The imaging device according to the invention shares the advantages of a method according to an embodiment described above.

[0105] The components of the imaging device according to the invention can be advantageously coordinated to enable time-efficient and robust execution of the method according to the invention. In particular, the imaging device according to the invention can be configured to autonomously coordinate and execute a sequence of individual process steps. This allows the user of the imaging device to adjust the imaging area for further imaging of the patient's body region without requiring special expertise or extensive training.

[0106] The computer program product according to the invention can be directly loaded into a storage unit of a computing unit of an imaging device according to the invention. The computer program product includes program code means for carrying out a method according to the invention in an embodiment described above when the computer program product is executed in the computing unit of the imaging device.

[0107] The computer program product according to the invention enables the method according to the invention to be executed quickly, identically, and robustly. The computer program product is configured to execute the process steps according to the invention using the computing unit. Preferably, the computing unit has the necessary prerequisites, such as main memory, a graphics card, or a logic unit, so that the respective process steps can be executed efficiently. The computer program product is stored, for example, on a computer-readable medium or on a network, a server, or a cloud, from where it can be loaded into a processor of the computing unit. The computing unit can be designed as an independent system component or as part of the imaging device.Furthermore, control information of the computer program product can be stored on an electronically readable data carrier. The control information on the electronically readable data carrier can be configured such that, when the data carrier is used in the processing unit of the imaging device, it performs a method according to the invention. Examples of electronically readable data carriers are a DVD, a magnetic tape, a USB flash drive, or any other data storage device on which electronically readable control information, in particular software, is stored. When this control information is read from the data carrier and transferred to a control unit and / or the processing unit of the imaging device, all embodiments of the described method according to the invention can be carried out.

[0108] Further advantages and details of the present invention will become apparent from the exemplary embodiments described below and from the drawings. These show: Fig. 1 a schematic representation of an embodiment of an imaging device according to the invention, Fig. 2 a flowchart of an embodiment of a method according to the invention, Fig. 3 a schematic representation of an aid for adjusting the imaging area of ​​an embodiment of a method according to the invention, Fig. 4 a schematic representation of an aid for adjusting the imaging area of ​​an embodiment of a method according to the invention, Fig. 5 a schematic representation of an aid for adjusting the imaging area of ​​an embodiment of a method according to the invention, Fig. 6 a schematic representation of an aid for adjusting the imaging area of ​​an embodiment of a method according to the invention, Fig. 7 a schematic representation of an aid for adjusting the imaging area of ​​an embodiment of a method according to the invention.

[0109] In Fig. 1 Figure 1 shows an embodiment of an imaging device 1 according to the invention. The imaging device 1 is configured as a magnetic resonance imaging (MRI) device 10. The MRI device 10 comprises a magnetic unit 11, which, for example, has a permanent magnet, an electromagnet, or a superconducting main magnet 12 for generating a strong and, in particular, homogeneous main magnetic field 13 (B0 magnetic field). The MRI device 10 also includes a patient acquisition area 14 for imaging a patient 15. In the present embodiment, the patient acquisition area 14 is cylindrical and surrounded in a circumferential direction by the magnetic unit 11. However, other configurations of the patient acquisition area 14 are also conceivable.

[0110] The patient 15 can be positioned in the patient acquisition area 14 using a patient positioning device 16 of the magnetic resonance imaging device 10. For this purpose, the patient positioning device 16 has a patient table 17 that is movable within the patient acquisition area 14.

[0111] The magnetic resonance instrument 10 further comprises a gradient coil 18 for generating magnetic gradient fields, which are used for spatial encoding during a magnetic resonance measurement. The gradient coil 18 is controlled by a gradient control unit 19 of the magnetic resonance instrument 10.

[0112] The magnetic resonance imaging (MRI) device 10 can further comprise a high-frequency antenna, which in the present embodiment is designed as a body coil 20 permanently integrated into the MRI device 10. The body coil 20 is designed to excite nuclear spins located in the main magnetic field 13 generated by the main magnet 12. The body coil 20 is driven by a high-frequency unit 21 of the MRI device 10 and emits high-frequency excitation pulses into an image acquisition region, which is essentially formed by the patient acquisition area 14 of the MRI device 10. The body coil 20 can be configured as a receiver unit of the MRI device 10, which is designed to receive magnetic resonance signals from the patient acquisition area 14.

[0113] The magnetic resonance imaging (MRI) device 10 includes a control unit 22 for controlling the main magnet 12, the gradient control unit 19, and the radio frequency unit 21. The control unit 22 is designed to control the execution of an imaging sequence, such as a gradient echo (GRE) sequence, a turbo spin echo (TSE) sequence, or an ultra-short echo time (UTE) sequence. The control unit 22 also includes a processing unit 28 for evaluating magnetic resonance signals acquired during an MRI scan.

[0114] Furthermore, the magnetic resonance imaging (MRI) device 10 includes a user interface 23, which has a signal connection to the control unit 22. Control information, such as imaging parameters of the MRI scan, as well as reconstructed image data of a body region 31 of the patient 15, and assistance for adjusting an imaging parameter, can be displayed to a user on an output unit 24 of the user interface 23. The output unit 24 can, for example, include one or more monitors. The output unit 24 can, in particular, be designed to provide a graphical user interface with image data of the body region 31 of the patient and assistance for adjusting the imaging parameter. Preferably, the user interface 23 includes an input unit 25, which allows the user to adjust imaging parameters, in particular a parameter of an imaging area.The input unit 25 can be configured to allow the user to adjust a dimension, orientation and / or position of a graphic object representing the imaging area, depending on the image data of the body region 31 of the patient 15 and the assistance for adjusting the imaging area.

[0115] In this example, the processing unit 28 is connected to a storage unit 29 of the magnetic resonance imaging (MRI) device 10 via a signal connection. Optionally, the processing unit 28 can also be connected to a cloud 30 via a signal connection. The processing unit 28 can be configured to store data such as patient information, image data, localizer image data, MRI images, X-ray images, or the like, on the storage unit 29 and / or the cloud 30, and / or to retrieve such data from the storage unit 29 and / or the cloud 30 via a suitable interface (not shown). It is conceivable that the processing unit 28 could be configured to retrieve patient information for patient 15 from the cloud 30 and / or the storage unit 29.It is also conceivable that the computing unit 28 is trained to obtain information about the body region 31 of the patient 15 depending on patient information, in particular a name and / or other identification, from the cloud 30 and / or the storage unit 29.

[0116] In a preferred embodiment, the magnetic resonance device 10 comprises a dental coil 26, which is positioned in an application-appropriate position on the jaw region 31 and / or in the oral cavity of the patient 15. The dental coil 26 may include an antenna element (not shown) configured to detect magnetic resonance signals from the jaw region and / or the dental region of the patient 15 and transmit them to the processing unit 28 and / or the control unit 22.

[0117] The dental coil 26 has an electrical connecting cable 27, which provides a signal connection to the high-frequency unit 21. In a preferred embodiment, the dental coil 26 is configured to excite nuclear spins in the jaw region 31 of the patient 15. The dental coil 26 can be controlled for this purpose by the high-frequency unit 21. In one example, the dental coil 26 is configured as a mask, which is positioned in a suitable position on the skin surface of the jaw region 31 of the patient 15. However, it is also conceivable that the dental coil 26 is mechanically connected to a bite element, which is positioned in a suitable position on a dental arch, particularly along an occlusal plane, of the patient 15.

[0118] The magnetic resonance device 10 according to the invention can, of course, include further components that magnetic resonance devices typically have. It is also conceivable that the magnetic resonance device 10 has a C-shaped, a triangular, or an asymmetrical structure for the magnetic field-generating components instead of a cylindrical structure. The magnetic resonance device 10 can, in particular, be configured to perform a magnetic resonance examination of a standing or sitting patient 15.

[0119] In Fig. 2Figure 1 shows a flowchart of an embodiment of a method according to the invention for determining an imaging protocol for acquiring image data of a patient's body region using an imaging device 1. The sequence of the exemplary embodiment of the method is explained below using a magnetic resonance imaging (MRI) device 10. Of course, the method according to the invention can also be carried out using a different imaging device according to an embodiment described above.

[0120] In step S1, information about the patient's body region is acquired. It is conceivable that this information is entered by a user of the magnetic resonance imaging (MRI) device 10 via the user interface 23. The user interface 23 can comprise any input unit 25, which enables user interaction with a graphical user interface. Preferably, the input unit 25 includes a keyboard, a mouse, and / or a touchscreen. The information about the patient's body region 15 entered by the user can then be acquired and processed by the control unit 22 and / or the processing unit 28 of the MRI device 10.

[0121] It is also conceivable that information about the patient's body region could be recorded or queried depending on patient information from a radiological information system, a hospital information system, a network storage unit, a local storage unit 29 and / or a cloud 30.

[0122] In step S2, an initial imaging examination is performed to capture image data of the body region depending on the information about the body region.

[0123] Preferably, the control unit 22 and / or the processing unit 28 is configured to determine a first imaging protocol or a first imaging area, which characterizes the first imaging examination, depending on the information about the patient's body region 15. The magnetic resonance imaging (MRI) device 10 can, in particular, be configured to perform the first imaging examination depending on the first imaging area and / or the first imaging protocol. For example, the first imaging protocol and / or the first imaging area can be automatically selected by the control unit 22 and / or processing unit 28 depending on the information about the body region, or specified by a user of the MRI device 10 via the user interface 23.It is also conceivable that the first imaging protocol and / or the first imaging area represents part of information about the patient's body region 15.

[0124] The initial imaging examination may be designed to acquire low-resolution magnetic resonance imaging (MRI) or low-quality image data of the patient's body region. In particular, the initial imaging examination may be a localizer measurement. It is also conceivable that the initial imaging examination may include an imaging or MRI scan that prioritizes the speed of image acquisition over the quality and / or resolution of the image data.

[0125] Step S3 comprises providing the image data and an input option for adjusting a parameter of an imaging area. Preferably, the image data of the patient's body region acquired in step S2 are provided to the user of the magnetic resonance imaging device 10 via the output unit 25. Providing the image data can, in particular, include displaying the image data on a monitor of the user interface 23.

[0126] Preferably, the provided image data of the patient's body region and the input option for adjusting the imaging area parameter constitute part of an output 40 of the user interface 23 (see Figures 3 to 5 ), which allows the user to adjust a magnetic resonance examination, in particular a parameter of an imaging area for a further imaging examination.

[0127] An input option for adjusting the imaging area parameter can, for example, include a text-based input mask and / or a text-based input window. However, it is equally conceivable that the input option for adjusting the imaging area parameter includes a graphical representation of the imaging area or a graphical object that can be modified by the user. For example, the user can adjust a dimension, orientation, and / or position of the imaging area representation to adjust the imaging area parameter. Preferably, the control unit 22 and / or the processing unit 28 of the magnetic resonance imaging device 10 are configured to derive or determine the parameter adjustment based on the user-modified representation of the imaging area.

[0128] Step S4 of the inventive method comprises providing assistance for adjusting the imaging area depending on the information about the body region.

[0129] In a preferred embodiment, providing assistance for adjusting the imaging area includes outputting text-based instructions and / or graphical instructions. The graphical instructions may, in particular, include a representation of the patient's body region 31 and the imaging area (see Figures 3 to 5 The assistance for adjusting the imaging area can enable a user of the magnetic resonance device 10 to adjust the imaging area for a second imaging examination.

[0130] Preferably, the assistance for adjusting the imaging area is provided as a graphical guide synchronized with a representation of the preliminary imaging area and the image data of body region 31 of patient 15. This enables the user to adjust the imaging area depending on a difference between the preliminary imaging area, the assistance for adjusting the imaging area, and also the shape of an individual anatomical structure of body region 31 of patient 15.

[0131] In the optional step S8, a preliminary imaging area is determined depending on the image data, whereby providing the input option to adjust the parameter of the imaging area includes a superimposition of a representation of the preliminary imaging area with the image data of body region 31 of patient 15.

[0132] Preferably, the preliminary imaging area is automatically determined by the control unit 22 and / or the processing unit 28 of the magnetic resonance imaging device 10 based on the image data of the patient's body region 31. It is conceivable that the control unit 22 and / or the processing unit 28 comprise an image processing algorithm designed to identify the body region 31 or a diagnostically relevant section of the patient's body region 31 in the image data and to determine and / or provide the preliminary imaging area adapted to the body region 31 or the diagnostically relevant section of the patient's body region 31.

[0133] In a preferred embodiment, the preliminary imaging area comprises a representation of an imaging area, in particular a graphic object, which is superimposed on the image data in an application-appropriate manner relative to the body region 31 of the patient 15. The graphic object can specify a position, orientation, and / or dimension of the imaging area, which can be interactively changed by the user via the user interface 23 when adjusting the imaging area.

[0134] In a further step S5, a customized imaging area is acquired. Preferably, an imaging area customized by the user via the user interface 23 is acquired by the control unit 22 and / or the processing unit 28. For example, the control unit 22 and / or the processing unit 28 can be configured to acquire a position, dimension, and / or orientation of a preliminary imaging area and / or a graphic object representing the imaging area that has been changed by the user, and to derive the customized imaging area from this. It is conceivable that the acquisition of the customized imaging area includes the acquisition of input from a mouse, a keyboard, and / or a touch input from a touchscreen.

[0135] Capturing the adapted imaging area may in particular include storing the adapted imaging area on the storage unit 29, a cloud storage 30, a network storage or the like.

[0136] In step S6, the imaging protocol for a second imaging examination is determined based on the adjusted imaging area. The determination of the imaging protocol for the second imaging examination can be performed automatically, particularly based on the adjusted imaging area.

[0137] Preferably, the determination of the imaging protocol for the second imaging examination is performed automatically by the control unit 22 and / or the processing unit. It is conceivable that the processing unit 28 comprises an algorithm configured to determine the imaging protocol for the second imaging examination based on the adjusted imaging area. For example, the algorithm could be configured to detect a user-made change to a dimension, position, and / or orientation of the preliminary imaging area and translate it into an imaging protocol for the second imaging examination. However, the control unit 22 and / or the processing unit 28 could also be configured to determine the imaging protocol based on numerical data and / or text-based user input.

[0138] In an optional step S7, a second imaging examination is performed to acquire further image data of body region 31 of patient 15, depending on the imaging protocol. Preferably, the second imaging examination is performed using the imaging device 1, in particular the magnetic resonance device 10.

[0139] To perform the second imaging examination, the patient can proceed as follows: 15, as described in Fig. 1The second imaging examination is, for example, a magnetic resonance examination of a dental region or a section of a dental region of the patient 15. Preferably, the resolution of the additional image data acquired by the second imaging examination is higher than the resolution of the image data. It is also conceivable that a diagnostically relevant section of the body region 31 of the patient 15 is better centered and / or focused in the additional image data than in the image data of the first imaging examination.

[0140] In Fig. 3 Figure 41 is a schematic representation of an aid for adjusting the imaging area according to an embodiment of the method according to the invention. The exemplary representation in Figure 41 is shown. Fig. 3can in particular represent an output 40 of the output unit 25 and / or the user interface 23 for a user of the imaging device 1.

[0141] The provision of the image data 33 and the input option 34 for adjusting the parameter of the imaging area 35 according to step S3 comprises, in this case, a comparison of the image data 33 of the patient 15 with the aid 41 for adjusting the imaging area. The aid 41 for adjusting the imaging area includes, in particular, a graphic guide with a representation of the body region 31 of the patient 15 and a representation of a desired or ideal imaging area.

[0142] Preferably, a representation of the preliminary imaging area 35 is superimposed on the image data 33 of the body region 31 of the patient 15. The representation of the preliminary imaging area 35 can simultaneously be a graphical object that allows the user to adjust the imaging area 35. The preliminary imaging area 35 can be automatically suggested to the user depending on the information about the body region 31 and can be based on a desired or ideal imaging area for a specific body region or a specific section of a body region. For example, the control unit 22 and / or the processing unit 28 can be configured to select or determine the preliminary imaging area 35 depending on the information about the body region 31 of the patient 15 and / or the image data of the body region 31 of the patient 15.

[0143] The provision of the image data 33 and the input option for adjusting the parameter of the imaging area 35 includes, in this case, the output of a sectional view of the body region 31 of the patient 15 based on the image data 33. Both the image data 33 of the body region 31 of the patient 15 and the graphical instructions (the aid for adjusting the imaging area 35) each show a sectional view of the head or the dental region of the patient 15. The reference planes of the sectional views of the image data 33 of the body region 31 of the patient 15, as well as of the graphical instructions, are aligned parallel to a sagittal plane of the patient 15 in the example shown.

[0144] Preferably, the input option 34 for adjusting the parameter of the imaging area 35 or the preliminary imaging area 35 comprises a graphic object which allows the user to adjust the imaging area 35 depending on the assistance 41 for adjusting the imaging area by manipulating a dimension, a position and / or an orientation of the graphic object.

[0145] In Fig. 4 Figure 1 shows a schematic representation of an aid 41 for adjusting the imaging area analogously to a further embodiment of the method according to the invention. The exemplary representation in Figure 2 Fig. 3 can in particular represent an output 40 of the output unit 25 and / or the user interface 23 for a user of the imaging device 1.

[0146] Unlike the one in Fig. 3In the embodiment shown, input option 34 for adjusting the parameter of the imaging area 35 includes a text field for entering parameters of the imaging area 35. For example, parameter 1 can define a dimension D, parameter 2 an orientation A, and parameter 3 a position of the imaging area 35. Furthermore, it is also possible to enter other parameters relevant to the respective imaging device 1. It is also conceivable that input option 34 for adjusting the parameter of the imaging area 35 could be configured as shown in Fig. 3 The figure shown comprises a graphical object which allows the user to graphically adjust the imaging area 35 according to an embodiment described above. Preferably, parameters 1 to 3 are updated depending on a manipulation of the graphical object by the user.

[0147] In the Fig. 4In the example shown, the aid 41 for adjusting the imaging area 35 includes both a graphical guide 41a and a text-based guide 41b. The text-based guide 41b can include a desired or ideal parameterization of the imaging area 35 for a specific body region or a specific section of a body region of the patient 35. In this case, the text-based guide 41b provides the user with a desired dimension D, a desired orientation A, and a desired position P of the imaging area 35 for a left section of an upper dental arch of the patient 15. The user is thus enabled to adjust the imaging area 35, depending on the aid 41 for adjusting the imaging area 35 and the image data 33, to the actual shape of the anatomical structures of the patient 15.

[0148] The Fig. 5Figure 41 shows a further schematic representation of an aid 41 for adjusting the imaging area according to a preferred embodiment of the method according to the invention. Analogous to the figures shown in the Figures 3 and 4 In the embodiments shown, the image data 33 of the body region 31 of the patient 15 and the input option 34 for adjusting the parameter of the imaging area 35 are compared with a graphical guide for adjusting the imaging area.

[0149] In the example of the Fig. 5Providing the aid 41 for adjusting the imaging area 35 includes outputting a graphical guide with representations of the patient's body region 31 and a desired or ideal imaging area. In this case, the graphical guide comprises two sectional views 41a and 41b of the patient's body region 31, with the two sectional views 41a and 41b oriented along different reference planes. In the example shown, the reference plane of sectional view 41a is aligned parallel to a sagittal plane of the patient 15, while the reference plane of sectional view 41b is aligned parallel to a frontal plane of the patient 15.

[0150] Preferably, providing the image data 33 and the input option 34 for adjusting the parameter of the imaging area 35 further comprises outputting two image data-based sectional views 33a and 33b of the patient's body region, wherein one reference plane of each of the two image data-based sectional views 33a and 33b of the patient's body region 31 is aligned parallel to one reference plane of each of the two sectional views 41a and 41b of the graphical guide.

[0151] The sectional views 33a and 33b of the patient's body region 31, based on the image data, each contain an input option 34a and 34b for adjusting the parameter of the imaging area 35. The input options 34a and 34b are designed as graphic objects which, according to an embodiment described above, can be manipulated by the user. Preferably, a dimension, orientation, and / or position of the graphic objects of the input options 34a and 34b for adjusting the parameter of the imaging area 35 are updated when the user has made an adjustment to the imaging area 35.

[0152] Since the left-right positioning of the imaging area 35 relative to the patient's dental region 15 may be unclear from the sectional view 41a alone, the sectional view 41a preferably includes an overview map 41c of the patient's body region 31, in which one or more diagnostically relevant sections of the patient's dental region 15 are marked or highlighted. The overview map 41c can be automatically generated by the control unit 22 and / or the processing unit 28 and output together with the aid 41 for adjusting the imaging area 35. It is conceivable that the aids 41 for adjusting the imaging area of ​​the embodiments of the Figures 3 and 4 a corresponding overview map 41c.

[0153] It is conceivable that the overview map 41c is provided to the user as an input option in step S1 in order to record the information about the body region 31 of patient 15.

[0154] In one embodiment of the method according to the invention, providing the assistance 41 for adapting the imaging area depending on the body region 31 of the patient 15 further comprises outputting a text-based instruction. In the Fig. 5In the example shown, the text-based instructions contain two instructions 41d, which provide instructions for the procedure of adjusting the imaging area 35. For example, instruction 1 instructs the user to position the imaging area 35 over a diagnostically relevant group of teeth that is to be scanned using the second imaging examination. Instruction 2 may instruct the user to align the imaging area 35 relative to a diagnostically relevant section of the group of teeth.

[0155] The Fig. 6 Figure 41 shows a further schematic representation of an aid 41 for adjusting the imaging area according to a preferred embodiment of the method according to the invention. Analogous to the one shown in Fig. 5In the embodiments shown, the image data 33 of the body region 31 of the patient 15 and the input option 34 for adjusting the parameter of the imaging area 35 are compared with a graphical guide for adjusting the imaging area.

[0156] In the example of the Fig. 6Providing the aid 41 for adjusting the imaging area includes outputting a graphical guide with representations of the patient's body region 31 and a desired or ideal imaging area. In this case, the graphical guide comprises three sectional views 41a, 41b, and 41c of the patient's body region 31, which are aligned along different reference planes. In the example shown, the reference plane of sectional view 41a is aligned parallel to a sagittal plane of the patient. The reference plane of sectional view 41b is aligned parallel to a frontal plane of the patient, and the reference plane of sectional view 41c is aligned parallel to a transverse or occlusal plane of the patient.

[0157] Preferably, providing the image data 33 and the input option 34 for adjusting the parameter of the imaging area 35 further comprises outputting three image data-based sectional views 33a, 33b and 33c of the body region 31 of the patient 15, wherein one reference plane of each of the three image data-based sectional views 33a, 33b and 33c of the body region of the patient is aligned parallel to one reference plane of each of the three sectional views 41a, 41b and 41c of the graphical guide.

[0158] The sectional views 33a, 33b, and 33c of the patient's body region, based on the image data, each contain an input option 34a, 34b, and 34c for adjusting a parameter of the imaging area 35. The input options 34a, 34b, and 34c are designed as graphical objects which can be manipulated by the user according to an embodiment described above. Preferably, a dimension, orientation, and / or position of the graphical objects of the input options 34a, 34b, and 34c are updated when the user makes a corresponding adjustment to the imaging area 35.

[0159] Providing the assistance 41 for adjusting the imaging area 35 may also include the output of one or more text-based instructions 41d, which, for example, contain instructions on the procedure for adjusting the imaging area 35. The text-based instructions 41d can inform the user about boundary conditions to be observed when adjusting the imaging area 35 using the input options 34a, 34b, and 34c. For example, the text-based instructions 41d can inform the user about an advantageous sequence for adjusting the imaging area 35 using the input options 34a, 34b, and 34c in the sectional views 33a, 33b, and 33c of the patient's body region 31, based on the image data.In particular, the text-based instructions 41d can inform the user which parameter of the imaging area 35 is adjusted in relation to which section view 33 based on the image data in order to achieve a time-efficient procedure and / or to avoid errors in adjusting the imaging area 35.

[0160] In the Figures 3 to 6 Is body region 31 of patient 15 a jaw region and / or a dental region of patient 15? Fig. 7Figure 1 shows an embodiment of the method according to the invention, in which the provision of the image data 33 of the body region 31 of the patient 15 and the assistance 41 for adjusting the imaging area 35 relate to a spine or a section of a spine of the patient 15. Analogous to the embodiments described above, the image data 33 of the spine of the patient 15 are displayed alongside a graphical instruction 41 for adjusting the imaging area 35. A representation of the preliminary imaging area 35 is superimposed on the image data 33 of the spine of the patient 15. The representation of the preliminary imaging area 35 can simultaneously include a graphic object 34, which enables the user to adjust the imaging area 35.

[0161] Naturally, the inventive method for determining an imaging protocol for acquiring image data of any other body regions can be used. In particular, the inventive method for determining an imaging protocol for acquiring image data of body regions with a multitude of differently oriented sections or subregions, such as a hand, a foot, a dental region, but also other anatomical structures and / or organs.

[0162] The embodiments of the method and imaging device according to the invention described here are to be understood as exemplary. Unless otherwise explained in detail, individual embodiments can, in principle, be extended to include features of other embodiments. In particular, the sequence of the process steps of the method according to the invention is to be understood as exemplary. The individual steps can also be carried out in a different sequence or may overlap partially or completely. For example, the steps of acquiring information about the body region and performing the first imaging examination can be carried out sequentially or at least partially overlapping in any order.Similarly, the provision of the image data and the input option for adjusting the imaging area parameter, as well as the provision of assistance for adjusting the imaging area depending on the information about the body region, can be carried out in any order, either sequentially or at least partially overlapping.

Claims

1. A computer-implemented method for determining an imaging protocol for acquiring image data (33) of a body region (31) of a patient (15) using an imaging device (1), comprising the steps of: • Acquiring (S1) information about the body region (31), • Performing (S2) a first imaging examination based on the information about the body region (31) and acquiring image data (33) of the body region (31), • Providing (S3) the image data (31) and an input option (34) for adjusting a parameter of an imaging area (35), • Providing (S4) assistance (41) for adjusting the imaging area based on the information about the body region (31), • Acquiring (S5) an adjusted imaging area (35), and • Determining (S6) the imaging protocol for a second imaging examination based on the adjusted imaging area (35).

2. The method according to claim 1, comprising the step: • Determining (S8) a preliminary imaging area depending on the image data (33), wherein providing the input option (34) for adjusting the parameter of the imaging area (35) comprises superimposing a representation of the preliminary imaging area with the image data (33) of the body region (31) of the patient (15).

3. The method according to claim 2, wherein the detection (S5) of the adapted imaging area (35) comprises detection of a correction of the preliminary imaging area.

4. The method according to one of the preceding claims, further comprising the step: • Performing (S7) the second imaging examination to acquire further image data of the body region (31) of the patient (15) depending on the imaging protocol.

5. The method according to one of the preceding claims, wherein providing (S4) the assistance (41) for adjusting the imaging area comprises outputting a text-based instruction and / or a graphical instruction.

6. The method according to claim 5, wherein providing (S4) the assistance (41) for adjusting the imaging area comprises outputting a graphical guide and wherein the graphical guide comprises a representation of the body region (31) and the imaging area.

7. The method according to claim 6, wherein the graphical instruction comprises at least two sectional views of the body region (31) of the patient (15), and wherein the at least two sectional views of the body region (31) of the patient (15) are aligned along different, preferably orthogonally aligned, reference planes.

8. The method according to claim 7, wherein the provision (S3) of the image data (33) and the input option (34) for adjusting the parameter of the imaging area (35) comprises outputting at least two sectional views of the body region (31) of the patient (15) based on the image data (33), and wherein each reference plane of the at least two sectional views of the body region (31) of the patient (15) based on the image data (33) is aligned parallel to each reference plane of the at least two sectional views of the body region (31) of the patient (15) of the graphical guide.

9. The method according to one of claims 6 to 8, wherein the provision (S3) of the image data (33) and the input option (34) for adjusting the parameter of the imaging area (35) comprises comparing the image data (33) with the graphical instructions.

10. The method according to one of the preceding claims, wherein the body region (31) comprises an anatomical area of ​​a first half of the patient's body (15) which is substantially symmetrical to an anatomical area in a second half of the patient's body (15) opposite the first half.

11. The method according to any of the preceding claims, wherein the body region (31) of the patient (15) comprises a jaw region and / or a tooth region.

12. The method according to claims 7 and 11, wherein a reference plane of a first sectional view of the at least two sectional views of the body region (31) of the patient (15) is aligned parallel to an occlusion plane of the patient (15) along a section of a dental arch, and a reference plane of a second sectional view of the at least two sectional views of the body region (31) of the patient (15) is aligned orthogonally to the reference plane of the first sectional view of the body region (31) of the patient (15).

13. An imaging device (1) for acquiring image data (33) of a body region (31) of a patient (15), comprising a control unit (22), an output unit (23; 24) and a user interface (23; 25), wherein the control unit (22) is configured to coordinate and execute a method according to one of the preceding claims by means of the imaging device (1), wherein the output unit (23; 24) is configured to provide a user of the imaging device (1) with assistance (41) for adjusting the imaging area, and wherein the user interface (23; 25) is configured to enable the user to adjust the imaging area (35) depending on the assistance (41) for adjusting the imaging area.

14. The imaging device according to claim 13, wherein the imaging device (1) is configured as a magnetic resonance device (10).

15. A computer program product that can be loaded directly into a storage unit (29) of a computing unit (28) of an imaging device (1) according to one of claims 13 or 14, comprising program code means to execute a computer-implemented method according to one of claims 1 to 12 when the computer program product is executed in the computing unit (28) of the imaging device (1).

Images